Alright not saying this range is exactly the most accurate, and it might be too light or too heavy, but anyway here's how you hold up against it:

equity win tie pots won pots tied
Hand 0: 26.299% 26.30% 00.00% 162 0.00 { KhTh }
Hand 1: 73.701% 73.70% 00.00% 454 0.00 { 88, 55, A5s, 7h6h, AcQh, AdQh, AsQh, A5o }

Ok now there was $300 in the pot on the flop. You bet $200 on the turn making the pot $500. Villian raises your bet to $500 (making the pot $800), leaving you $300 more to call into an $800 pot.

$300/$800=.375. We have less than 37.5% equity in the pot so I think we should fold. There's still another street of play though which sort of complicates things, and we obviously have 0 fold equity by shoving. Plus our hand stands no chance to improve, whereas our opponents can.

Please carve this up so I can learn from it I think I made some mistakes and I also think I'm missing something, thanks.